Cooling and flow equalizing manifold for compressors



APPLICATION FILED APR. I9, i918.

Patented Oct. 28,1919.

2 SHEETS-SHEET I Tm: summum Mmmm/Pn CIL. WASHINGTON. D. C.

M. BALLOIRA.

COOLING ANO FLOW EQUALIZING MANIFOLD FOR CLOMPRESSORS.

APPLICATION FILED 11.19.1918.

1,319,831. Patented om. 28,1919.

2 SHEETS-SHEET 2.

MARIO BALLOIRA, OF TURIN, ITALY.

COOLING AND FLOW-EQUALIZING MANIFOLD FOR COMPRESSORS.

Specification of Letters Patent.

Patented oct. 2s, 1919.

Application filed April 19, 1918. Serial No. 229,660.

To all fr0/wm it may concern.'

Be it known that I, MARIO BALLOIRA, a subject of the King of Italy, residing at Via Aurelio Salii 8, Turin, Italy, have invented certain new and useful Improvements in Cooling and Flow Equalizing Manifolds for Compressors; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the saine, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

The present invention has for its object an arrangement for balancing under a pres* sure previously established and for cooling air or other compressed fluid coming from a motor-compressor as for instance such as is illustrated in my patent application of April 19, 1917, Serial No. 229,659, which motor-compressor has substantially the form of an internal combustion engine in which some of the cylinders serve for the compression of air or other uid.

The said arrangement consists of a manifold for collecting the compressed air com ing from the several exhaust openings of the motor-compressor and of a reservoir connected with said manifold which acting as an elastic bag or equalization box serves to diminish the sudden variations of pressure of the compressed Huid coming from the motor-compressor at every stroke of this latter, the said fluid being from here sent to the main reservoir orto lthe apparatus of utilization. The cooling of the compressed fluid which comes from the motorecomp-ressor at a relatively high temperature is realized by means of cooling water made to circulate in a free space or water jacket of the manifold and also by means of cooling ribs with which the reservoir or equalization box is provided. The regulation of the pres'- sure is attained by means of a safety valve convenientlyr calibrated to open under a previously established pressure fitted for in stance on the manifold.

A constructional form of said arrangement for balancing and cooling the air or other compressed fluid coming from a motorcoinpressor is shown, by way of example, in the annexed drawing in which the Figures 1, 2 and 3 represent the manifold respectively in longitudinal vertical section, in plan and in transverse vertical section Fig. L1 is a vertical section of the safety valve k fitted on .the said receiver or collecting box,- Eigs. 5 and 6 show the reservoir or equalization box respectively in lateral and front elevation g--the Fig. 7 is a horizontal section on line 7X, 7x of Fig. 6.

The manifold (see'iFigs. 1 to 3) consists of a chamber 1 horizontally disposed and provided with flanged nipples 2, 2 intended to be connected with the exhaust openings of the motor-compressor and consequently corresponding in number and position with the said openings. Thus in the case shown in the drawing, as said manifold must serve for the motor-compressor described in the patent application hereinbefore mentioned, in the name of the same inventor, in which the two end cylinders of the motor-compressor serve for the compression of air or other fluid, the said manifold has two flanged nipples 2, 2 suitably disposed to fit on the corresponding flanges of the exhaust openings of said motor-compressor. number and position of said flanged nipples 2, 2 can therefore vary according to the number and position of the exhaust openings of the motor-compressor. The outlet tube 3 is connected with the chamber 1 disposed preferably vertically and provided with the connecting flange 4 by means of which it is attached lto the reservoir or equalization box, as will be hereinafter explained.

The cooling of the air or other compressed fluid coming to the said manifold is obtained by means of cooling water made to circulate in the free space 5 formed all around the chamber 1 and the exhaust tube 3 by means of the double wall 6. The'inlet of the water in the said space or water jacket 5 is effected through the opening 7 while the outlet is effected through theopening 8.

A suitable safety valve is fitted in a convenient place on the receiver. The said safety valve which is shown in detail in Fig. at, serves to prevent an excessive increase of pressure of the compressed fluid which is collected in the manifold and which from thence passes to the receiver and to the main reservoir. This safety valve is held in the central chamber 9 of a sleeve 9 screwed into a suitable threaded opening l0 of the chamber 1, and it consists of a ball 11 resting The lso

tightly on the edge of the central tube of said sleeve 9 communicating with the interior of the chamber 1 and opening into the chamber 9. The ball 11 is kept tightly forced on its seat by means of the rod 12 which is slidably mounted in the guide 13 screwed into the sleeve 9; the said rod 12 being provided with a disk 12 With which it rests upon the ball 11 and upon which the spring 14C acts, the said springreacting on the other side against the bottom of the guide 13. By screwing the guide 13 more or less into the sleeve 9 and then fixing it in the desired position by means of the lock nut 15 the safety valve can be conveniently calibrated so that it can open only when the pressure in the interior of the receiver has reached a previously determined value. The fluid eventually flowing from the safety valve is discharged into the atmosphere through holes 9 of the sleeve 9 and the said holes communicating with the chamber 9 in Which the ball 11 acts.

The reservoir or equalization box (see Figs. 5, 6, 7) consists of a large cylindrical chamber 16 provided with an inlet tube 17 intended to be connected by means of the flange 18 to the flange 4 of the outlet tube 3 t of the manifold said chamber 16 being provided With an outlet opening 19 to be connected to the main reservoir of the iluid under pressure or to the pipe Which conveys this fluid to the apparatus designed to utilize it. On the top of the chamber 16 there may be provided brackets 16 which receive fastening screws serving to fixing the Whole chamber to supporting lugs of the same. The chamber might also be provided with suitable connecting pipes serving for instance to install a pressure gage for indicating the pressure of the fluid in the interior of the chamber or for other purposes.

F or the purpose of cooling the compressed fluid conveyed to the chamber 16, the said chamber as Well as its inlet tube 17 are provided with large ribs 20 (see also the detailed vievv Fig. 7) projecting in the surrounding air and serving to send toward the exterior the heat stored in the compressed fluid.

The above described reservoir being of a considerable size serves to diminish the sudden variations of pressure of the fluid at every stroke of the compressor and therefore acts as an elastic bag or equalization box.

By means of the Whole of the above described arrangement the balancing under a pressure previously established of compressed fluid as Well as the cooling of the latter is thus realized.

It is to be understood that the present invention is not limited in any Way to the exact constructions and arrangements as described and shown, and that Without departing from its nature, the invention may be modified in any Way that may be 4found necessary for practical conditions or requirements.

1. A rigid manifold having a plurality of compressed gas inlet openings at its upper portion and a single outlet, a Water cooling jacket surrounding said manifold and a' pressure actuated vent valve on the manifold to vent the over pressure of the gas from the manifold before substantial cooling of the gas has been effected; in combination With a pressure equalizing receiver directly connected to the manifold, and cooling ribs on said receiver for further cooling of the compressed gases before their discharge therefrom to a reservoir.

2. A' rigid manifold having a plurality of compressed air inlet openings at its upper portion and a single depending outlet portion 3, a Water cooling jacket surrounding the manifold and depending outlet portion; in combination With a pressure equalizing receiver 16 having an upwardly eX- tending inlet tube 17 and a lateral outlet, said upwardly extending tube arranged for direct connection with the depending outlet of said manifold, and cooling ribs on said receiver and its upwardly extending inlet tube to cool the compressed air at a second stage of its transit, said receiver operating to equalize the pressure of the compressed gas before its discharge therefrom to a reservoir or the like.

In testimony that l claim the foregoing as my invention, I have signed my name in presence of tWo subscribing Witnesses.

MARI() BALLOIRA. `Witnessesz LINA LINoNr, GIUSEPPE DE LEo.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

